Electrical condenser



June '28 1927. 1,633,566

w. A. BOCKIUS ELECTRICAL couosusa'n Filed Feb 13, 1925 l ii PatentedJune 28, 1927.

UNITED STATES WALTER A. BOCKIUS OF PARK RIDGE, ILLINOIS.

ELECTRICAL Application filed February The invention relates toelectrical condonf-zers and more particularly to the type generallyknown as straight-line condens- (:X'S.

In this type, when used in radio systems, it is desirable to provide forvariation of the maximum capacity of the condenser and also to provide aconstruction in which the condenser, under maximum varying capacities,utilizes a full stroke of the movable plates so as to give asubstantially full scale and proportionate reflection on the indicator,notwithstanding the variation in the maximum capacity.

This object is accomplished primarily by proVidingfor theadjustment ofone set of interleaved plates, so that the maximum ca-' pacity may bevaried, and in such a manner that, under variable maximum capzicities,the capacity will he graduated down from the maximum during a fullstroke of adjustment in the movable set.

The invention consists in the several novel features hereinafter setforth and more particularly defined by claims at the conclusion hereof.i

In the, drawings: Fig. 1' is a plan of a. condenser embodying-theinvention, the supporting wall being'shown in section. ;Fig. 2 is asection taken on line 2-2 Fig.3: is a section.- taken on line 3-3 ofFig. 1. Fig. 4 is-a perspective of the slideway in which the movableset.- of leaves-is supported.

The invention is exemplified in a condenser comprising a set ofrectangular, plates 4 which are rigidly secured together by means ofwashers 5 to which the plates are soldered to form a unitary structure.:A rod 6 extends through these plates and washers and constitutes asupport therefor. Rod 6 is provided with a head 8 which'is confined in achannel 9 formed in a guide-plate 10 which is secured by screws 11 to asupplementary supporting plate 12. The rod 6 passes through a slot 13 tothe backof guideplate l0 and the foremost washer secured to leaves 4 isprovided with lugs 14 which fit against the sides of slot 13 to hold theset of leaves 4- against rotation. The set of plates 4 is hold on rod 6by a. thumb-nut 15 and the rod is also secured in its assigned positionin the guide-plate l0 and against vertical movement by the nut whichclamps the leaves 4 and washers 5 against the back face ofguideplatell). A rotatable set of plates 16 are secured to washers 17. This plateand washer pl ates m y be v ie qiprovid line condenser which;

CONDENSER.

13, 1925. Serial N6. 8,889.

structure is rotatably held on. a stationary shaft 18 by a nut thatthese leaves and washers are free to rotate when. held on said shaft.The plates 16 areinterleaved with plates it-and each plate 16 comprisesa short arm 16 and has one of its edges 16 generally radial and an outeredge or periphery 20 which is approximatelycircumferential. The relativeshapes of plates 16 and 4 are such as to causean approximately straightline, variation .in capacity by rotation of the leaves 16 into and 19,.it being understood out of interleaved relation. with plates -4.

A dial 21 is provided with a thumb-wheel 22, which is fixed to a shaft;23 which extends through the board or support 24 an d, also through thevauxiliary supporting plate. 12. A pinion 25, fixed to shaft 23, mesheswith a. segment 26 fixed to rotate with plates 16 and washers 17.This thumb wheel and dial are thus adapted to rotate the leaves lfi tobring the.- interleaved plates. in greateri or lesser lapped relation to'correspondingly vary the condensing eiiiciencyQ} S t0ps or p ns 27 aresecured. in pIateHIZ-tolimit the re tative movement of segment 26 soithat the plates 16 willgbe stopped at aposition where the capacity of.thecondenseris a maximum By iei idi i i e aivs y=t h italmm athletesfiil i x mnml PR mleti e 9 t reteste maxim pa ei i seflthe'se ei e tWhil Plates a e n; i er nt r rt al adms m t the ,plates lti may have at,all lZlII 1 e S, 8. 'full rangejof movement and a characteristieof the,invention is thatha. full fstroke df the plates 16, under varyingmaximum capacities of the condenser, willre'sult in varia- .tion. =which.:w i1l be reflected on the dial 21 throughout. a substantially; full 1stroke. a result, the maximum eapaeity 'maybeva ried and the dialreflection will be propor- 1 tionate to the movement of the plate 16dur- .ing substantially the fullstrokeof the dial.

The invention exemplifies a f straighttion in the maximum c'apacity'ofthe condenser and in which the rotatable adjustment'of one set of platesrelatively to the other reflects a Substantially proportionate variationon the dial under different maximum capacities. The device is simple inconstruction and provides for ready adjustment of the maximum capacitywhenever desired.

provides for a variael he yin Both sets of leaves and operatingmechanism tor the rotatable set are mounted in a supplementary platewhich maybe easily applied to the usual supporting board of a radio set.v.

The invention is not to be understood as restricted to the details setforth, since these may be modified within the scope of the apbeadedclaims, Without departing from the spirit and scope of the invention.

I Ia-ving thus described the invention, what I claim as new and desireto secure by Let- 'teifs Patent, is:

'1. In an electrical condenser, the combitiation of a pair of sets ofinterleaved plates, one of which is stationary and the other freelymovable lhto and out of'lapped relati'oii with the stationary set, andmeans for adjusting one set ina'subst'antially rectilinear pathrelatively to theother set to increase or decrease the maxil'numbapacityof the cohde'nser and so as to efie'ct proportionate variation byoperating the freely mov able set.

2.1a anelcttical condenser, the cornbi ria tionof 'a pair of s'ets ot'interleave d plates,

'onfot which is stationary and the other ft'e'ely rotatable in't'o' audout of' lapped relatibn tvitli the stationary set, and a slidableconnection for adjusting tlie"?statitinary"se't "iii a'siibstantiallyrectilinear pa'th relatively 't-o'Ttlie rotatable sea-s0 a's'tdincrea'se or defciease the maxii'nuin' capacityof'th'flcoiidenser andto effect proportionateyariatioh by the rdtatibn of the i'ot'at'alo'leset 3Q In an electrical cotidens'eifthe'combination of a pairof sets ofinterleaved plates, Qii tiot 'iilliih is statwnaryahdythe other ,treel[nova le into endeavor-ni d relatid 'ivithti'estatiohat'yse'tgaiidaieansior salsa Sena), increase or "decieasetheHnamal as-eapapicy" er the condens r and'so tb etl ct, proportionate variat-i'on'b'y'lopen a j e' tfs iiieans "fer clamping the bbdlly adjustable at inasassigiieaipesaoa '4. In an electrical condenser, 'rheknmbination of apaii' of'sts of interleavetl'plates,

.'one at when is Ste-awry and are other rotation of the rotatable set,comprising a rod and means for conjointly clamping the rod and theadjustable set in assigned positions.

5. In an electrical condenser, the combination of a pair of sets ofinterleaved plates, 'one of which isstationary and the other rotatable,an auxiliary supporting plate adapt ed for attachment to a support,means for mounting the rotatable set on said plate, and means foradjustably mounting the stationary set on said plate to bodily adjust itrelatively to the rotatable set to increase or decrease the maximumca-pacityot the coudenser.

(S; In an'el'ectrical condenser, the combination of a pair of setso't-interleaved plates, one of which is stationary and the otherrotat-able, an auxiliary supporting plate adapted for attachment to asupport, means for mounting the rotatable set on said plate, means foradjustably mounting the stationary set on said plate tobodily adjust itrelatively to the rotatable set to increase or de crease the maximumcapacity of the condenser, and meahs for operating the rotatable setcauried by the auxiliary supporting plate I 1 1 7. In an electricalcondenser, the combination of a pair of sets of interleaved plates, oneof which is stationary-and the other rotatabl'e, an auxiliary supportingplate adapted for attachment 'to' 'a si'ipport," means for mounting therotatable set on said plate,

a siidable' 'cbnne'ction fiirr supporting the stationary set on-saidplate so 'itl inay -'be bodily adj usted' i'n' a-substantially*srectilinear path relatively to the'rotatableset toincrease or decrease-the niaximum capacity of the 'condenser-, ahd:means foroperating the rotatable flse't'car'ried by the-auiciliary.suppbrting platew 8. in a-n electrieal condenser,-.'the combiiiationiofa paiwof sets o f interleaved plates, one of 1 which as stationary end'-the-= other of which-1s freely= iotatab1efiiito and-oat :of lappedrelationwith the stationary set, and

mean s forbod-iiy moi img one o fithe'sets rela- 'tivelytb the' other toincrease 'or decrease the distance between the stationary-set and 'thakis tif the rotary set so; as to varythe maximum capacity o-ftheieondenserr signed abGhi'C ag'U fllliiiisftllis 2nd dayot'Fe'b'i-aary, 1924; r I

WA TER iixeooKros.

